What is a "Quick Disconnect" (QD) cable?

A Quick Disconnect (QD) feature allows you to disconnect the headset from the bottom lead without hanging up the call. This is perfect for office workers who need to move away from their desks briefly while keeping their headsets on and is more common for corded headsets specifically designed for call centres. This also means that you can purchase separately the bottom part of the cable to connect your headset to your specific device, be that USB, or legacy RJ11 for phone connections.